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ChipMOS TECHNOLOGIES IMOS

US equityMarket cap rank #2558SemiconductorsTop Gainers Yesterday
$79.08 +$1.67 (+2.16%)
Market open · Oct 6, 9:50 am ET · After hours $77.41 0.00%
Open$80.26
Prev close$77.41
Day range$78.74 – $80.35
Volume9,996
Market cap$2.77B
P/E (TTM)38.5
Dividend yield0.96%

Ownership & positioning

Who holds it, who is betting against it, and where the big money is moving

Institutional ownership45.1%-0.06 pts vs. prior quarter
Institutions holding128-1 vs. prior quarter
Insider trades (recent)0 buys / 0 sellsBalanced
Short interest0.26% of floatDays to cover 1.4 · as of 15 Sep 2026
Short-sale volume share13.3%5-day average of daily volume

Short-sale volume as % of daily volume

9%15%21%27%Sep '26Sep '26Oct '26

Large-order net flow, last 20 sessions

Net of large-order buying minus selling, in USD. Over this window: −$45.7K (10 inflow days, 10 outflow days).

The five largest holders on file together own 26.3% of shares outstanding.

Largest holders

  • ASE Technology Holding Co., Ltd.11.27%
  • Yann Yuan Investment Co., Ltd.5.89%
  • Norges Bank Investment Management3.52%
  • Renaissance Technologies Corp.3.16%
  • BlackRock2.43%
  • Dimensional Fund Advisors2.18%
  • The Goldman Sachs Group, Inc.2.09%
  • Shih-Jye Cheng1.77%

By investor type

  • Public Company15.99%
  • Mutual Fund12.89%
  • Private Company6.81%
  • Hedge Fund3.54%
  • Sovereign Wealth Fund3.52%
  • Individual/Insider2.00%
  • Corporate Pension Plan1.05%
  • Government Pension Fund0.71%

Reported short interest has held roughly steady near 0.26% of float over the last 6 biweekly reports (30 Jun 2026 to 15 Sep 2026).

Short interest, by report

Report dateShares short% of floatDays to cover
15 Sep 2026 90,533 0.3% 1.4
31 Aug 2026 107,858 0.3% 1.7
14 Aug 2026 115,206 0.3% 1.0
31 Jul 2026 98,049 0.3% 1.0
15 Jul 2026 116,050 0.3% 1.0
30 Jun 2026 78,742 0.2% 1.0

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